MaloMyotismon

Number: 353
Level: Mega
Kind: Demon Lord
Type: Virus
Attacks: Pandemonium Flare
Attacks: Melting Blood

MaloMyotismon is the Mega bad guy in season 2 of Digimon.  He lived in Oikawa's body for three years until he had enough energy to come out and have revenge on the digidestined.